We've profiled Dutch Ink, a group of inventive artists from South Africa, before, and now we've gotten word of their latest reverse graffiti exhibit. Called "Flight 101," the "clean tags" are created by scrubbing dirty walls with steel brushes and depict birds in flight in an area of the country well-known for its biodiversity. The birds are etched into the Umgeni road interchange that spans a section of the Umgeni river in KwaZulu Natal. This is the latest in a series of clean graffiti pieces throughout the region that has perplexed local authorities tasked with managing "fringe" urban art projects.

JP Jordaan, Nick Ferreira, Stathi Kougianos and Martin Pace are all Vega graduates, a brand communication school in South Africa. The group’s surprising and thought-evoking eco art is designed to draw attention to our ever-increasing alienation from nature.

Instead of painting new images on degraded municipal walls and other infrastructure, the group enhances them with clean, temporary graffiti. While tagging is technically illegal, authorities are battling to pin down how exactly these “urban vandals” are doing harm. Because they’re not. We love Dutch Ink’s work, so stay tuned for updates.